Voltage Controlled Amplifier Circuit

Vcrs manufactured in this way can be obtained as.

Voltage controlled amplifier circuit. A voltage amplifier circuit is a circuit that amplifies the input voltage to a higher voltage. A variable gain or voltage controlled amplifier is an electronic amplifier that varies its gain depending on a control voltage. An amplifier electronic amplifier or informally amp is an electronic device that can increase the power of a signal a time varying voltage or current it is a two port electronic circuit that uses electric power from a power supply to increase the amplitude of a signal applied to its input terminals producing a proportionally greater amplitude signal at its output. How to build a voltage controlled oscillator circuit with a 4046 chip.

A voltage controlled amplifier can be realised by first creating a voltage controlled resistor vcr which is used to set the amplifier gain. So for example if we input 1v into the circuit we can get 10v as output if we set the circuit for a gain of 10. A simple linear voltage controlled amplifier can be constructed with one op amp and two jfets see the figure. The vcr is one of the numerous interesting circuit elements that can be produced by using a jfet junction field effect transistor with simple biasing.

It can be realized by first creating a voltage controlled resistor which is used to set the. The amplifier can achieve an 80 db dynamic control range with less than 0 2. This voltage controlled amplifier circuit is simply an op amp having an additional input at pin 5.